package com.smartClassroom.base.exception;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.http.HttpStatus;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.List;

@Slf4j
@ControllerAdvice
//@RestControllerAdvice
public class GlobalExceptionHandler {
    //对项目的自定义异常类型进行处理
    @ResponseBody
    @ExceptionHandler(SmartClassroomException.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public RestErrorResponse customException(SmartClassroomException e){

        //记录异常
        log.error("系统异常{}",e.getErrMessage(),e);

        //解析出异常信息
        String errMessage = e.getErrMessage();
        RestErrorResponse restErrorResponse = new RestErrorResponse(errMessage);
        if (e.getErrCode()!=null){
            restErrorResponse.setErrCode(e.getErrCode());
        }
        return restErrorResponse;
    }

//    @ResponseBody
//    @ExceptionHandler(Exception.class)
//    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
//    public RestErrorResponse exception(Exception e){
//
//        //记录异常
//        log.error("系统异常{}",e.getMessage(),e);
//
//        //解析出异常信息
//        RestErrorResponse restErrorResponse = new RestErrorResponse(CommonError.UNKOWN_ERROR.getErrMessage());
//        return restErrorResponse;
//    }
    @ResponseBody
    @ExceptionHandler(Exception.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public RestErrorResponse exception(Exception e){
        //记录异常
        log.error("系统异常{}",e.getMessage(),e);
        if (e.getMessage().equals("不允许访问")){
            return new RestErrorResponse("您没有权限操作此功能");
        }
        //解析出异常信息
        RestErrorResponse restErrorResponse = new RestErrorResponse(CommonError.UNKOWN_ERROR.getErrMessage());
        return restErrorResponse;
    }





    //MethodArgumentNotValidException
    @ResponseBody
    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public RestErrorResponse methodArgumentNotValidException(MethodArgumentNotValidException e){

        BindingResult bindingResult = e.getBindingResult();
        //存储错误信息
        List<String> errors = new ArrayList<>();
        bindingResult.getFieldErrors().stream().forEach(item->{
            errors.add(item.getDefaultMessage());
        });

        //将list中的错误信息拼接起来
        String errMessage = StringUtils.join(errors, ",");
        //记录异常
        log.error("系统异常{}",e.getMessage(),errMessage);

        //解析出异常信息
        RestErrorResponse restErrorResponse = new RestErrorResponse(errMessage);
        return restErrorResponse;
    }

}
